JP2009001235A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle constituted compact with a simple structure capable of arbitrarily controlling difference of upper and lower temperatures and enhancing the maximum cooling performance by increasing an amount of air without increasing the performance of a blower. <P>SOLUTION: In the air conditioner 1 for the vehicle, a cooling unit 5 and a heating heater 6 are arranged on an air passage 4, and a plurality of air blowing ports 9, 10, 11 are provided on a downstream side of the heating heater 6. The heating heater 6 is constituted by a plurality of electric heaters 6A, 6B arranged in a direction for shutting off the air flow passage 4, and the plurality of electric heaters 6A, 6B can be independently temperature-adjusted, respectively. On the air flow passage 4, a cooling air by-passing flow passage 7 by-passing through the electric heaters 6A, 6B and passing the cooling air is formed, and on the cooling air by-passing flow passage 7, a Max Cool damper 8 capable of adjusting the flow passage cross section is provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle air conditioner that can be widely applied not only to a vehicle equipped with an internal combustion engine but also to a hybrid vehicle, an electric vehicle, a fuel cell vehicle, and the like.

  In a vehicle air conditioner equipped with an internal combustion engine, the cooling water of the internal combustion engine can be used as a heat source for heating. Therefore, the hot water from the internal combustion engine is circulated downstream of the evaporator provided in the unit body. Many are equipped with a hot water heater. In this vehicle air conditioner, the air mix damper adjusts the mixing ratio between the amount of cool air cooled by the evaporator and the amount of cold air circulated via the heater and the amount of air circulated by bypassing the heater. Air-mix type air conditioners that control the air flow are the mainstream.

  In general, a vehicle air conditioner generally includes a differential outlet that blows temperature-controlled air along the windshield, a face outlet that blows temperature-controlled air toward the upper body of the occupant, and warms toward the feet of the occupant. A plurality of air outlets such as a foot outlet that blows out the air conditioning are provided, and a plurality of air outlet modes, that is, a differential mode so that the temperature-controlled air can be selectively blown out from one or more of the air outlets. Face mode, foot mode, differential foot mode, bi-level mode, etc. can be selected. In the case of the differential foot mode or the bi-level mode that blows out temperature-controlled air from two or more outlets, the temperature of the temperature-controlled air that is blown out from the differential outlet or the face outlet provided in the upper part of the vehicle, It is preferable to secure a certain temperature difference (vertical temperature difference) between the temperature of the temperature-controlled air blown from the foot blower opening provided in the lower part of the vehicle.

  In the air mix type air conditioner, the vertical temperature difference is determined by the flow path structure inside the unit (arrangement of cold air flow path and hot air flow path, collision angle thereof, etc.), evaporator, hot water heater, internal flow path, Since it is restricted by the position of each outlet, it is difficult to arbitrarily adjust the upper and lower temperature difference. In particular, it is difficult to achieve both the characteristics in the bi-level mode and the characteristics in the differential foot mode. Therefore, in order to arbitrarily control the temperature difference between the upper and lower sides, in addition to the air mix damper, a cooling air bypass channel is provided, but there are problems such as a complicated channel configuration.

  On the other hand, instead of the air mix method, an electric heater such as a PTC heater is provided divided into a plurality of heating areas so as to block the air flow path on the downstream side of the evaporator, and the energization amount to the plurality of electric heaters is independent. The temperature can be adjusted independently in each heating area, and the difference between the upper and lower temperatures can be secured in the differential foot mode and bi-level mode, and the temperature control in each mode is improved, and the structure Patent Documents 1 and 2 propose a vehicle air conditioner that can be configured in a simple and compact manner.

JP-A-6-143984 JP 2000-272332 A

  However, those described in Patent Documents 1 and 2 are configured such that all of the cold air cooled by the evaporator passes through the electric heater. For this reason, it is unavoidable that pressure loss occurs when the cold air passes through the electric heater, and there is a problem that the maximum cooling performance is inevitably lowered due to the influence. In addition, if the air volume is increased and the maximum cooling performance is to be improved, the blower must be increased in air flow, resulting in a problem that the blower becomes larger, consumes more power, or increases noise. Resulting in.

  The present invention has been made in view of such circumstances, and it is possible to arbitrarily control the upper and lower temperature difference and to increase the air flow without increasing the blower performance and to improve the maximum cooling performance. It is an object of the present invention to provide a vehicle air conditioner having a simple structure and a possible structure.

In order to solve the above problems, the vehicle air conditioner of the present invention employs the following means.
That is, the vehicle air conditioner according to the present invention heats a cooler that cools the air flowing through the air flow path and the cool air cooled by the cooler in a unit body in which the air flow path is formed. In the vehicle air conditioner in which a plurality of air outlets are provided on the downstream side of the heater, the heater is disposed in a direction that blocks the air flow path. A plurality of electric heaters, the temperature of each of which can be adjusted independently, and a cold air bypass that bypasses the electric heater and distributes the cold air to the air flow path. A flow path is formed, and the cool air bypass flow path is provided with a max cool damper capable of adjusting a cross-sectional area of the flow path.

  According to the present invention, since the heater is composed of a plurality of electric heaters whose temperature can be adjusted independently, the heat generation amount can be arbitrarily controlled for each of the plurality of electric heaters to freely adjust the temperature. . Therefore, it is possible to arbitrarily control the upper and lower temperature difference in the bi-level mode or the differential foot mode according to the situation, and the degree of freedom of temperature control can be greatly improved. In addition, the plurality of air outlet positions are not a restriction for providing a difference in temperature between the upper and lower sides, and the outlet positions can be freely laid out. For this reason, it is easy to design the unit, and it is possible to form an air flow path with little pressure loss. Further, since an air mix region for mixing cold air and hot air is not required, the air flow path can be simplified and the unit can be made compact. Furthermore, since a cold air bypass passage provided with a max cool damper that circulates the cool air by bypassing the electric heater is formed, the maximum air volume can be increased by opening the max cool damper and bypassing the cool air. Therefore, it is possible to realize various temperature control controls such as maximum cooling by increasing the cooling air volume, expansion control of the upper and lower temperature difference by combination control with an electric heater, rapid cooling, and rapid heating.

  Furthermore, the vehicle air conditioner according to the present invention is characterized in that, in the vehicle air conditioner, the Max Cool damper is disposed on a face outlet side of the plurality of air outlets. .

  According to the present invention, the max cool damper is disposed on the face outlet side, so that by opening the max cool damper, the cool air bypassing the electric heater can be guided to the face outlet as it is. Therefore, at the time of cooling, a sufficient amount of cooling air can be secured, and comfortable cooling including maximum cooling can be realized.

  Furthermore, the vehicle air conditioner according to the present invention heats the cooler that cools the air flowing through the air flow path and the cool air cooled by the cooler in the unit body in which the air flow path is formed. In the vehicle air conditioner in which a plurality of air outlets are provided on the downstream side of the heater, the heater is disposed in a direction that blocks the air flow path. A plurality of heaters, one of which is an electric heater and the other one is a hot water heater, and the temperature of each of the electric heater and the hot water heater can be adjusted independently. Is formed with a cold air bypass passage that bypasses the electric heater and the hot water heater and distributes the cold air, and the cold air bypass passage has a cross-sectional area adjusted. Possible Mack school damper is characterized in that it is provided.

  According to the present invention, since one of the plurality of heaters is an electric heater and the other is a hot water heater, the heater is selectively configured in accordance with the heat source on the vehicle side and its capacity. Moreover, the temperature can be freely adjusted by arbitrarily controlling a plurality of electric heaters and hot water heaters. Therefore, it is possible to arbitrarily control the upper and lower temperature difference in the bi-level mode or the differential foot mode according to the situation, and the degree of freedom of temperature control can be greatly improved. In addition, the plurality of air outlet positions are not a restriction for providing a difference in temperature between the upper and lower sides, and the outlet positions can be freely laid out. For this reason, it is easy to design the unit, and it is possible to form an air flow path with little pressure loss. Further, since an air mix region for mixing cold air and hot air is not required, the air flow path can be simplified and the unit can be made compact. In addition, a cold air bypass passage having a max cool damper that bypasses the electric heater and the hot water heater and circulates the cold air is formed, so the maximum air volume is increased by opening the max cool damper and bypassing the cold air. be able to. Therefore, it is possible to realize various temperature control such as maximum cooling by increasing the maximum air volume, expansion control of the upper and lower temperature difference by combination control with the electric heater and the hot water heater, rapid cooling, and rapid heating. .

  Furthermore, the vehicle air conditioner of the present invention is the vehicle air conditioner described above, wherein the max cool damper and the electric heater are disposed on a face outlet side of the plurality of air outlets, The hot water heater is disposed on a foot outlet side of the plurality of air outlets.

  According to the present invention, since the max cool damper and the electric heater are disposed on the face outlet side, the amount and temperature of the cold air blown from the face outlet are mainly controlled by the max cool damper and the electric heater. Can be adjusted. Therefore, by utilizing the good temperature control function of the electric heater, the temperature control performance when the Max Cool Damper is opened and the maximum air flow is increased can be improved, and the temperature difference between the top and bottom is also fined when the air flow increases. Can be controlled.

  Furthermore, the vehicle air conditioner of the present invention is the vehicle air conditioner described above, wherein the Max Cool damper and the hot water heater are disposed on the face outlet side of the plurality of air outlets, The electric heater is disposed on a foot outlet side of the plurality of air outlets.

  According to the present invention, since the Max Cool damper and the hot water heater are disposed on the face outlet side, the air volume and temperature of the cold air blown from the face outlet are mainly controlled by the Max Cool damper and the hot water heater. Can be adjusted. Therefore, even if the hot water supply of the hot water heater is turned on / off and the configuration is simplified, good temperature control can be ensured, and the vertical temperature difference can be finely controlled even when the air volume is increased.

  Furthermore, the vehicle air conditioner of the present invention is the air conditioner for a vehicle according to any one of the above-described vehicles, wherein the air flow path is provided in the downstream portion of the heater in the air flow path corresponding to the left and right of the vehicle. A center plate that divides into two flow paths is installed, and the electric heater and / or the hot water heater are divided into left and right parts corresponding to the two flow paths, and the temperature can be adjusted independently. In addition, the plurality of air outlets are provided in the two flow paths corresponding to the respective flow paths.

  According to the present invention, the electric heater and / or the hot water heater are divided and installed on the left and right sides corresponding to the two left and right flow paths partitioned by the center plate, and the temperature can be adjusted independently. Therefore, the left and right independent temperature control can be easily realized only by the temperature control function of the electric heater and / or the hot water heater. This eliminates the problem that the pressure loss of the air flow path fluctuates during temperature adjustment and the temperature control of one flow path affects the temperature of the other flow path. Right and left independent temperature control can be realized.

  Furthermore, the vehicle air conditioner of the present invention is the vehicle air conditioner according to any one of the above-described vehicles, wherein a rear console damper is provided in the air flow path between the cooler and the heater. A duct is connected, and the rear console duct is connected to a rear console unit having an electric heater and a rear console outlet.

  According to the present invention, the rear console duct is connected to the air flow path between the cooler and the heater via the rear console damper, and the rear console unit including the electric heater is connected to the rear console duct. In the console unit, the temperature can be freely adjusted by reheating the cold air guided through the rear console duct by arbitrarily controlling the amount of heat generated by the electric heater. Therefore, independent temperature control on the rear console unit side can be realized with a simple and simple configuration.

  Furthermore, the vehicle air conditioner according to the present invention heats the cooler that cools the air flowing through the air flow path and the cool air cooled by the cooler in the unit body in which the air flow path is formed. In the vehicle air conditioner provided with a plurality of air outlets on the downstream side of the heater, in the air flow path between the cooler and the heater A rear console duct is connected via a rear console damper, and the rear console duct is connected to a rear console unit including an electric heater and a rear console outlet.

  According to the present invention, the rear console duct is connected via the rear console damper between the cooler and the heater of the air flow path in which the cooler and the heater are sequentially arranged, and the electric heater is provided to the rear console duct. Since the rear console unit is connected, the cool air introduced through the rear console duct is reheated by an electric heater in the rear console unit, so that the temperature of the temperature-controlled air blown from the rear console outlet can be arbitrarily set. Can be adjusted. Therefore, independent temperature control on the rear console unit side can be realized with a simple and simple configuration without drawing hot water piping or the like to the rear side.

  According to the present invention, the upper and lower temperature difference in the bi-level mode or the differential foot mode can be arbitrarily controlled, so that the degree of freedom of temperature control can be greatly improved. In addition, since the outlet position can be freely laid out, the unit can be easily designed, an air flow path with less pressure loss can be formed, and an air mix area is not required. Can be made compact. Furthermore, because the maximum air volume can be increased by the cold air bypass flow path with the Max Cool damper that bypasses the electric heater and distributes the cold air, the maximum cooling and electric heater with the maximum air volume increased. Various temperature control such as expansion control of the upper and lower temperature difference, rapid cooling, rapid heating, etc. can be realized by combining the above.

Further, according to the present invention, one of the plurality of heaters is constituted by an electric heater, and the other one is constituted by a hot water heater, so that the heater can be constituted corresponding to the heat source on the vehicle side and its capacity. . Moreover, since the temperature can be freely adjusted by arbitrarily controlling a plurality of electric heaters and hot water heaters, the degree of freedom in temperature control can be greatly improved.
Further, according to the present invention, in the rear console unit, the temperature of the temperature-controlled air blown out from the rear console outlet is arbitrarily adjusted by reheating the cold air introduced through the rear console duct by the electric heater. Therefore, independent temperature control on the rear console unit side can be realized with a simple and simple configuration without drawing hot water piping or the like on the rear side.

Embodiments according to the present invention will be described below with reference to the drawings.
[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.
FIG. 1 shows a longitudinal sectional view of an air conditioning unit (hereinafter referred to as “HVAC unit”) 2 constituting the vehicle air conditioner 1 according to the first embodiment of the present invention. The vehicle air conditioner 1 includes an HVAC unit 2 and a blower unit (not shown) connected to the upstream side thereof. The blower unit includes a blower that takes in the air inside or outside the vehicle and pumps it into the HVAC unit 2 on the downstream side.

  The HVAC unit 2 has a unit body 3 that forms an air flow path 4 through which air blown from the blower unit is circulated. In the air passage 4 of the unit main body 3, a cooler (evaporator) 5 for cooling the circulating air and a heater 6 for heating the cold air cooled by the cooler 5 are sequentially arranged from the upstream side. The cooler (evaporator) 5 constitutes a refrigeration cycle together with a compressor (not shown), a condenser, and an expansion valve, and cools the air by exchanging heat between the refrigerant circulating in the refrigeration cycle and the air.

  The heater 6 is composed of a plurality of upper and lower electric heaters 6 </ b> A and 6 </ b> B arranged in a direction that blocks the air flow path 4. The electric heaters 6A and 6B are each composed of a PTC (Positive Temperature Coefficient) heater, and the temperature can be adjusted independently by controlling the energization amount.

  In the air flow path 4, a cold air bypass flow path 7 is formed in the upper part of the electric heaters 6 </ b> A and 6 </ b> B for flowing the cold air cooled by the cooler 5 by bypassing the electric heaters 6 </ b> A and 6 </ b> B. The cool air bypass channel 7 is provided with a max cool damper 8 that can adjust the channel cross-sectional area so as to be rotatable.

  Further, on the downstream side of the electric heaters 6A and 6B, a plurality of air outlets, that is, face outlets, for blowing the temperature-controlled air whose temperature is adjusted by the cooler 5 and the electric heaters 6A and 6B into the vehicle interior. 9, a differential outlet 10 and a foot outlet 11 are provided. In the present embodiment, the face outlet 9 and the differential outlet 10 are provided on the upper surface side of the unit body 3 so as to communicate with the upper part of the air passage 4 in which the cold air bypass passage 7 and the max cool damper 8 are provided. The foot outlet 11 is provided on the lower surface side of the unit body 3 so as to communicate with the lower portion of the air flow path 4.

  Each of the outlets 9, 10, 11 is provided with a face damper 12, a differential damper 13, and a foot damper 14 for opening and closing the outlets 9, 10, 11, respectively. These dampers 12, 13, and 14 are generally operated in conjunction with each other, and a face mode in which temperature-controlled air is blown out from the face outlet 9, a differential mode in which the def outlet 10 is blown out, a foot mode in which the foot outlet 11 is blown out, A plurality of blowing modes such as a bi-level mode for blowing from both the face blowing port 9 and the foot blowing port 11 and a differential foot mode for blowing from both the differential blowing port 10 and the foot blowing port 11 can be selected manually or automatically. Configured.

  Further, in the unit main body 3, the cool air cooled by the cooler 5 is guided to the rear console of the vehicle through the rear console damper 15 in the air flow path 4 between the cooler 5 and the electric heaters 6A and 6B. A rear console duct 16 is connected. A rear console unit 17 having an electric heater 18 composed of a PTC heater and a rear console outlet 19 is connected to an end portion of the rear console duct 16, and the rear seat side is independent of the front seat side. It is configured so that the temperature can be controlled.

Next, operation | movement of the vehicle air conditioner 1 concerning this embodiment is demonstrated.
Outside air or in-vehicle air taken in by the blower unit is pumped to the HVAC unit 2 by a blower. This air is cooled by the cooler 5 while being circulated through the air flow path 4 of the HVAC unit 2, and if the max cool damper 8 is fully closed, the entire amount of the cooled cold air is supplied to the electric heaters 6A and 6B. Distributed. The electric heaters 6A and 6B generate heat according to the energization amount, respectively, and heat the cold air to generate a temperature-controlled air having a set temperature. This temperature-controlled air is blown into the vehicle from any one of the face air outlet 9, the differential air outlet 10, and the foot air outlet 11 according to the selected air outlet mode, and is used for air conditioning in the passenger compartment.

  Here, a single mode such as a face mode in which temperature-controlled air is blown out from the face outlet 9, a differential mode in which temperature-controlled air is blown out from the differential outlet 10, a foot mode in which temperature-controlled air is blown out from the foot outlet 11, etc. In the mode in which the temperature-controlled air is blown from the mouth, the heat generation amounts of the two electric heaters 6A and 6B may be controlled equally so that the temperature-controlled air having a temperature suitable for each mode is obtained.

  On the other hand, as in a bi-level mode in which temperature-controlled air is blown from both the face outlet 9 and the foot outlet 11, or a differential foot mode in which temperature-controlled air is blown from both the differential outlet 10 and the foot outlet 11. In the mode in which the temperature-controlled air is blown from two or more outlets, it is preferable that the temperature-controlled air blown toward the upper body and the lower body of the occupant has a certain vertical temperature difference. That is, in the bi-level mode, the temperature of the temperature-controlled air blown from the face outlet 9 is lower than the temperature of the temperature-controlled air blown from the foot outlet 11, and in the differential foot mode, the foot outlet This is because the temperature of the temperature-controlled air blown out from the differential outlet 10 can be made lower than that of the temperature-controlled air blown out from the mouth 11, so that the air conditioning of the head cold foot heat can be realized.

  In the case of the present embodiment, since the temperature can be adjusted independently by controlling the energization amount to the electric heaters 6A and 6B, the electric heater 6A is supplied with more energy than the energization amount to the electric heater 6B. By reducing the energization amount, the temperature of the temperature-controlled air that has passed through the electric heater 6A can be made lower than the temperature of the temperature-controlled air that has passed through the electric heater 6B. For this reason, the temperature-controlled air that has passed through the electric heater 6A that flows mainly toward the face outlet 9 or the differential outlet 10 and the temperature-controlled air that has passed through the electric heater 6B that mainly flows into the foot outlet 11 side. A temperature difference between the upper and lower sides can be given relatively easily. In addition, the temperature difference between the upper and lower sides can be arbitrarily controlled by controlling the energization amount to the electric heaters 6A and 6B.

  FIG. 2 shows an example of the heat generation amount control of the electric heaters 6A and 6B. FIG. 2 (A) is in the bi-level mode. From the state where the heating value ratio of the electric heaters 6A and 6B is 50:50 and the temperature difference is zero, the heating value ratio is 0:50 and the temperature is It shows that it can be controlled arbitrarily up to the state where the difference is maximized. FIG. 2 (B) shows a case in the differential foot mode, where the heat generation ratio of the electric heaters 6A and 6B is changed to 75:50, 50:50, and 25:50, and the differential side is warmed. This indicates that the foot side can be controlled arbitrarily until it is warm.

  FIG. 3 shows an energization pattern diagram (A) to the electric heaters 6A and 6B in the bi-level mode and a change state diagram (B) of the blowing temperature at that time. As shown in (A), when the energization amount for the electric heater 6A (circuit A) and the electric heater 6B (circuit B) is changed linearly with a certain difference, the face is changed as shown in (B). It shows that the blowout air temperature can be changed linearly while maintaining a certain upper and lower temperature difference on the blowout port 9 side and the foot blowout port 11 side.

  Further, as described above, when the Maxcool damper 8 is fully closed and the entire amount of the cool air obtained by the cooler 5 is circulated through the electric heaters 6A and 6B, pressure loss occurs in the electric heaters 6A and 6B. This is unavoidable, and even during the maximum cooling with both the electric heaters 6A and 6B turned off, no more airflow can be expected. However, by opening the Max Cool damper 8, the cold air can be directly guided to the face outlet 9 or the differential outlet 10 by bypassing the electric heaters 6A and 6B by the cold air bypass passage 7, thereby reducing pressure loss. The amount of cold air can be increased accordingly. Therefore, the maximum air volume can be increased during cooling without increasing the blower air volume.

  Similarly, the upper and lower temperature differences can be changed by controlling the energization amount to the upper and lower electric heaters 6A and 6B in the state where the Max Cool damper 8 is opened and the air volume is increased. The effect can be further expanded. Furthermore, by utilizing the speed of responsiveness of the electric heaters 6A and 6B, the max cool damper 8 is fully opened and the electric heaters 6A and 6B are both turned off, and the max cool damper 8 is installed. It becomes possible to realize rapid heating or the like in the fully closed state with the electric heaters 6A and 6B set to the maximum energization amount.

  Further, when the rear console unit 17 is used, a part of the cold air cooled by the cooler 5 is guided to the rear console unit 17 via the rear console duct 16 by opening the rear console damper 15. In the rear console unit 17, the temperature of the rear seat side can be adjusted by heating the cold air to an arbitrary temperature by the electric heater 18 and blowing it out from the outlet 19. Therefore, the rear seat side can be adjusted to an arbitrary temperature independently of the front seat side.

Thus, according to the present embodiment, the following effects can be obtained.
Since the temperature can be adjusted freely by arbitrarily controlling the amount of heat generated by the electric heaters 6A and 6B that can be adjusted independently of each other, the upper and lower temperatures in the bi-level mode and differential foot mode can be adjusted depending on the situation. The difference can be arbitrarily controlled, and the degree of freedom of temperature control can be greatly improved. Further, the positions of the plurality of air outlets 9, 10, 11 are not a restriction for making a difference in temperature between the upper and lower sides, and the positions of the outlets 9, 10, 11 can be freely laid out. It is easy to design and the air flow path 4 with little pressure loss can be formed. Moreover, since an air mix region for mixing cold air and hot air is not required, the air flow path 4 can be simplified and the HVAC unit 2 can be made compact.

  Furthermore, since the cold air bypass passage 7 including the max cool damper 8 that bypasses the electric heaters 6A and 6B and distributes the cool air is formed, the maximum air volume can be obtained by opening the max cool damper 7 and bypassing the cool air. Can be increased. Therefore, it is possible to realize various temperature control such as maximum cooling by increasing the amount of cooling air, expansion control of the upper and lower temperature difference by combination control with the electric heaters 6A and 6B, rapid cooling, and rapid heating. .

  Since the Max Cool damper 8 is disposed on the face outlet 9 and the differential outlet 10 side, the cold air bypassing the electric heaters 6A and 6B is directly opened by opening the Max Cool damper 8 as it is. And it can guide to the differential outlet 10 side. Therefore, at the time of cooling or defrosting, it is possible to secure a sufficient amount of cooling air, to realize comfortable cooling including maximum cooling, and to improve defrost performance.

  Furthermore, in the rear console unit 17, the temperature of the temperature-controlled air blown from the rear console outlet 19 is arbitrarily adjusted by reheating the cold air introduced through the rear console duct 16 by the electric heater 18. The rear seat side can be adjusted to an arbitrary temperature independently of the front seat side. Therefore, independent temperature control on the rear console unit 17 side can be realized with a simple and simple configuration without drawing hot water piping or the like on the rear side.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG.
This embodiment differs from the first embodiment described above in that either one of the electric heaters 6A and 6B is a hot water heater 6C. Since other points are the same as those in the first embodiment, description thereof will be omitted.
In the present embodiment, as shown in FIG. 1, one of the electric heaters 6A and 6B in the first embodiment is replaced with a hot water heater 6C. That is, of the plurality of heaters 6 arranged vertically, the upper heater is the electric heater 6A and the lower heater is the hot water heater 6C, and the upper heater is the hot water heater 6C and the lower heater. Is considered to be the electric heater 6B.

  As described above, one of the plurality of heaters 6 is an electric heater 6A or 6B and the other one is a hot water heater 6C, so that the heat source on the vehicle side and its capacity (electric capacity can be reduced). The heater can be selectively configured corresponding to the above. Moreover, the temperature can be freely adjusted by arbitrarily controlling the plurality of electric heaters 6A and 6B and the hot water heater 6C. Therefore, according to the present embodiment, the same effect as that of the first embodiment can be obtained, and at the same time, a specific effect that the combination range of the heat sources for heating can be expanded can be obtained.

  Further, in replacing one of the electric heaters 6A and 6B with the hot water heater 6C, when the upper heater is the electric heater 6A and the lower heater is the hot water heater 6C, the Max Cool Damper is placed on the face outlet 9 side. 8 and the electric heater 6A are arranged, the amount and temperature of the cold air blown out from the face outlet 9 can be adjusted mainly by the max cool damper 8 and the electric heater 6A. For this reason, the combination with a good temperature control function of the electric heater 6A can improve the temperature control performance when the maximum cooler 8 is opened and the maximum air flow is increased, and the difference in the upper and lower temperature is also increased when the air flow is increased. It can be finely controlled.

  On the other hand, when the upper heater is the hot water heater 6C and the lower heater is the electric heater 6B, the Max Cool damper 8 and the hot water heater 6C are disposed on the face outlet 9 side, so the face outlet 9 The amount and temperature of the cold air blown out from the main body can be adjusted mainly by the max cool damper 8 and the hot water heater 6C. For this reason, even if the hot water supply of the hot water heater 6C is turned on / off to simplify the configuration, good temperature control can be ensured, and the vertical temperature difference can be finely controlled even when the air volume is increased.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG.
In the present embodiment, the electric heaters 6A and 6B and / or the hot water heater 6C are not only provided in the upper and lower directions, but also divided into two on the left and right, compared to the first and second embodiments described above. Are different. Since other points are the same as those in the first and second embodiments, description thereof will be omitted.
That is, in the present embodiment, as shown in FIG. 4, the center plate 20 is installed in the air flow path 4 on the downstream side of the heater 6 in correspondence with the left and right sides of the vehicle (driver seat side and passenger seat side). The air flow path 4 is divided into two right and left flow paths 4A and 4B. In addition, a plurality of upper and lower electric heaters 6A and 6B (one of which may be a hot water heater 6C) capable of independently adjusting the temperature are disposed in the two flow paths 4A and 4B. .

  In addition, a driver side air outlet 9A, a differential air outlet 10A, and a foot air outlet 11A are provided on the air flow path 4A side of the two air flow paths 4A and 4B, and the air flow path 4B side. Are provided with a face outlet 9B, a differential outlet 10B, and a foot outlet 11B on the passenger seat side. And the damper 12A, 12B, 13A, 13B, 14A, 14B which opens and closes each outlet is provided in this outlet 9A, 9B, 10A, 10B, 11A, 11B.

  Thus, according to the present embodiment, the electric heaters 6A and 6B and / or the hot water heater 6C are divided into left and right parts corresponding to the left and right flow paths 4A and 4B partitioned by the center plate 20, and are vertically moved. The temperature can be adjusted independently of each other. For this reason, the left and right independent temperature control for independently controlling the temperature on the driver's seat side and the passenger seat side only by the temperature control function of the electric heaters 6A and 6B and / or the hot water heater 6C, and the pressure loss fluctuation of the air flow path. This can be realized easily without generating any. Therefore, in addition to the same effects as those of the first embodiment, the pressure loss of the air flow path fluctuates during temperature adjustment, so that the temperature control of one flow path affects the temperature of the other flow path. It is possible to obtain a unique effect that the comfortable left and right independent temperature control can be realized.

  The present invention is not limited to the invention according to the above-described embodiment, and can be appropriately modified without departing from the gist thereof. For example, the positions of the face air outlet 9, the differential air outlet 10, and the foot air outlet 11 can be freely laid out not only on the upper surface and the lower surface of the unit body 3 but also on other surfaces such as the front surface and the side surface. Further, the rear console damper 15, the rear console duct 16, and the rear console unit 17 may be arbitrarily attached and detached as optional treatments. Further, the rear console unit 17 can be similarly applied regardless of the configuration of the vehicle air conditioner on the heater 6 side.

It is a longitudinal section of the air harmony device for vehicles concerning a 1st embodiment of the present invention. FIG. 2 is an explanatory diagram (A) of the heat generation amount control of the electric heater in the bi-level mode of the vehicle air conditioner shown in FIG. 1 and an explanatory diagram (B) of the heat generation amount control in the differential foot mode. It is the electricity supply pattern figure (A) at the time of the bilevel mode of the air conditioning apparatus for vehicles shown in FIG. 1, and the change state figure (B) of the blowing temperature at that time. It is a cross-sectional view of a vehicle air conditioner according to a third embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 3 Unit main body 4, 4A, 4B Air flow path 5 Cooler 6 Heater 6A, 6B Electric heater 6C Hot water heater 7 Cold air bypass flow path 8 Max cool damper 9, 9A, 9B Face outlet 10, 10A, 10B Differential outlet 11, 11A, 11B Foot outlet 15 Rear console damper 16 Rear console duct 17 Rear console unit 18 Electric heater 19 Rear console outlet 20 Center plate

Claims (8)

In the unit body in which the air flow path is formed, a cooler for cooling the air flowing through the air flow path and a heater for heating the cold air cooled by the cooler are arranged in this order, and In the vehicle air conditioner provided with a plurality of air outlets on the downstream side of the heater,
The heater is composed of a plurality of electric heaters arranged in a direction to block the air flow path, and the plurality of electric heaters can be independently adjusted in temperature,
In the air flow path, a cold air bypass flow path that bypasses the electric heater and distributes the cold air is formed,
The cool air bypass flow path is provided with a max cool damper capable of adjusting a cross-sectional area of the flow path.   2. The vehicle air conditioner according to claim 1, wherein the Max Cool damper is disposed on a face outlet side of the plurality of air outlets. In the unit body in which the air flow path is formed, a cooler for cooling the air flowing through the air flow path and a heater for heating the cold air cooled by the cooler are arranged in this order, and In the vehicle air conditioner provided with a plurality of air outlets on the downstream side of the heater,
The heater is a plurality of heaters arranged in a direction blocking the air flow path, one of which is an electric heater and the other is a hot water heater, and these electric heater and hot water heater Are each independently temperature adjustable,
The air flow path is formed with a cold air bypass flow path that bypasses the electric heater and the hot water heater and distributes the cold air,
The cool air bypass flow path is provided with a max cool damper capable of adjusting a cross-sectional area of the flow path.   The max cool damper and the electric heater are disposed on a face outlet side of the plurality of air outlets, and the hot water heater is disposed on a foot outlet side of the plurality of air outlets. The vehicle air conditioner according to claim 3, wherein the vehicle air conditioner is provided.   The Max Cool damper and the hot water heater are disposed on a face outlet side of the plurality of air outlets, and the electric heater is disposed on a foot outlet side of the plurality of air outlets. The vehicle air conditioner according to claim 3, wherein the vehicle air conditioner is provided. A center plate that divides the air flow path into two flow paths corresponding to the left and right sides of the vehicle is installed in the heater downstream of the air flow path.
The electric heater and / or the hot water heater are respectively divided into left and right parts corresponding to the two flow paths, and can be independently adjusted in temperature,
The vehicle air conditioner according to any one of claims 1 to 5, wherein the two flow paths are provided with the plurality of air outlets corresponding to the respective flow paths. A rear console duct is connected to the air flow path between the cooler and the heater via a rear console damper,
The vehicle air conditioner according to any one of claims 1 to 6, wherein the rear console duct is connected to a rear console unit including an electric heater and a rear console outlet. In the unit body in which the air flow path is formed, a cooler for cooling the air flowing through the air flow path and a heater for heating the cold air cooled by the cooler are arranged in this order, and In the vehicle air conditioner provided with a plurality of air outlets on the downstream side of the heater,
A rear console duct is connected to the air flow path between the cooler and the heater via a rear console damper,
The vehicle air conditioner is characterized in that the rear console duct is connected to a rear console unit including an electric heater and a rear console outlet.

Images